| WHI Safeguard Ltd | Manufacturing | 2013 |
| While WE Wonder Limited | Education | 2023 |
| Whiskers & Paws Spa Limited | Other services | 2019 |
| White Digital Media Limited | Professional & scientific | 2021 |
| White Fern Weddings Ltd | Arts & recreation | 2024 |
| Whitefox Ltd | Information & communication | 2025 |
| Whitehall Equity Release Ltd | Professional & scientific | 2018 |
| Whitehall Partnership LLP | | 2019 |
| Whitehill Services Limited | Manufacturing | 2020 |
| Whitehouse Support Ltd | Professional & scientific | 2020 |
| Whitford Reclamation Limited | Professional & scientific | 2002 |
| Whittaker Business Assistance Limited | Administrative & support | 1999 |
| Whittimere Investments Limited | Financial services | 2019 |
| Whole New Chapter Limited | Information & communication | 2015 |
| Whytek Consulting Limited | Education | 2013 |
| WIC Commercial Services Ltd | Professional & scientific | 2024 |
| Wide Range Tiles (Distribution Centre) Limited | Wholesale & retail | 1999 |
| Wightwick Court Limited | Households | 1968 |
| Wild Swimming Socks Limited | Wholesale & retail | 2024 |
| Wildcat Grip Limited | Information & communication | 2012 |
| Wilded Family Limited | Information & communication | 2009 |
| Wilded Limited | Wholesale & retail | 2022 |
| Wildjac Limited | Extraterritorial | 2023 |
| Wildland Estate Limited | Financial services | 2026 |
| Wildlife Escapes Limited | Professional & scientific | 2011 |
| Wildmoor Holding Company Limited | Professional & scientific | 2012 |
| Wildmoor Property Company Limited | Real estate | 2024 |
| Wildmoor Trading Limited | Administrative & support | 2011 |
| Wildmoor Truck & Plant Ltd | Wholesale & retail | 2010 |
| Wilgoe Properties Limited | Real estate | 2003 |
| Willetts (Builders-Dudley) Limited | Wholesale & retail | 1967 |
| Willetts Lodge RTM Company Ltd | Households | 2026 |
| Willex Properties Limited | Real estate | 2016 |
| William Joshua Estates Ltd | Real estate | 2014 |
| William Kendrick & Sons Holdings Limited | Construction | 2015 |
| William Kendrick & Sons Limited | Construction | 1973 |
| Willis Contract Services Limited | Professional & scientific | 2017 |
| Willition Limited | Financial services | 2025 |
| Willow & Rowe Ltd | Wholesale & retail | 2025 |
| Willow Tree Care Home Ltd | Professional & scientific | 2006 |
| Willowbrook Advisory Ltd | Professional & scientific | 2012 |
| Willows Residential Care Ltd | Health & social care | 2017 |
| Wilxite Limited | Information & communication | 2010 |
| Window Options (Midlands) Ltd | Manufacturing | 2014 |
| Wine Ville Limited | Wholesale & retail | 2017 |
| Wink Property Investments Limited | Real estate | 2019 |
| Winnow Ltd | Professional & scientific | 2024 |
| Winward Advantage Limited | Professional & scientific | 2005 |
| Wisteria Films Limited | Manufacturing | 2000 |
| Wkid Ltd | Information & communication | 2026 |
| WM Solution Services Ltd | Construction | 2022 |
| WMG Solutions Ltd | Professional & scientific | 2025 |
| Wolf & Wildsmith Limited | Administrative & support | 2017 |
| Wolf Lettings Limited | Real estate | 2002 |
| Wollaston Automotive Care Limited | Wholesale & retail | 2021 |
| Wollaston Automotive MOT Limited | Wholesale & retail | 2023 |
| Wollaston DP Ltd | Health & social care | 2025 |
| Wollaston Fisheries Ltd | Hospitality | 2025 |
| Wollaston Flooring Ltd | Wholesale & retail | 2025 |
| Wollaston Office Cleaning and Homecare Services Limited | Administrative & support | 2025 |
| Wolverhampton Flight Training Limited | Transport & logistics | 2008 |
| Wombourne Healthcare Ltd | Wholesale & retail | 2021 |
| Wong's Halal Chinese & Desserts Ltd | Hospitality | 2024 |
| Wood Properties 2014 Limited | Financial services | 2014 |
| Woodgate 2 Limited | Real estate | 2021 |
| Woodgate Farms (Midlands) Limited | Agriculture & fishing | 2019 |
| Woodgate Land & Property Ltd | Agriculture & fishing | 2011 |
| Woodhouse Forest Development Limited | Agriculture & fishing | 2023 |
| Woodings Property Limited | Real estate | 2023 |
| Woodland Gardens Management Company Limited | Real estate | 2005 |
| Woodville Property Ltd | Real estate | 2024 |
| Worcester Piping & Building Services Limited | Real estate | 1969 |
| Worcester Street Food Ltd | Hospitality | 2026 |
| Wordsley Chinese 168 Ltd | Hospitality | 2024 |
| Wordsley Chippy Limited | Wholesale & retail | 2023 |
| Wordsley General Engineering Limited | Manufacturing | 2009 |
| Wordsley Housing Society | Hospitality | 1990 |
| Wordsley Spice Ltd | Hospitality | 2022 |
| Workplace Packaging Limited | Administrative & support | 2017 |
| Workplace Products Limited | Extraterritorial | 2005 |
| World Wines Birmingham Ltd | Wholesale & retail | 2024 |
| Worrall and Bailey Limited | Extraterritorial | 2017 |
| WPE Corporation Limited | Transport & logistics | 2015 |
| WR Consultancy and Training Limited | Professional & scientific | 2020 |
| Wrenfinch Limited | Information & communication | 2021 |
| WS Car Sales Ltd | Wholesale & retail | 2022 |
| Wychbury (Easemore) Ltd | Construction | 2024 |
| Wychbury (Hurst Hill) Ltd | Construction | 2024 |
| Wychbury (Romsley) Ltd | Construction | 2025 |
| Wychbury (Salford Priors) Ltd | Construction | 2023 |
| Wychbury Campers Limited | Professional & scientific | 2014 |
| Wychbury Grange Management Company Limited | Households | 1996 |
| Wychbury Mews Apartments RTM Company Limited | Households | 2021 |
| Wychbury Partnerships Ltd | Construction | 2025 |
| Wyeth Estates Ltd | Households | 2026 |
| Wyken Farm Buildings (Management) Limited | Extraterritorial | 2002 |
| Wyre Heating Limited | Wholesale & retail | 1999 |
| Xclean Limited | Administrative & support | 2024 |
| Xiren UK Ltd | Manufacturing | 2024 |
| Xpru Ltd | Financial services | 2025 |